新型含三氟甲基八羟基喹啉锌配合物的合成及紫外、荧光性质研究

摘要

A novel 8-hydroxyquinoline derivative ligand containing trifluoromethylbenzene Group:(E)-2-[2-(2-trifluromethylphenyl)vinyl]-8-hydroxyquinoline(4) and its zinc complex(5) have been synthesized and identified by 1H NMR,FFIR,MS techniques and elemental analyses.The crystal structure of ligand 4 was determined by X-ray single crystal diffraction,and its network structure is special spiral.The aggregation behavior of Zn(AcO)2·2H2O and the ligand 4 in solvents was investigated by UV-Vis,fluorescence spectrum and 1H NMR spectra titration.Fluorescence emission results showed that the λmax of ligand 4 and complex 5 were 474 nm and 601 nm,respectively.The fluorescence lifetime of ligand 4 and complex 5 were investigated in the solid state,their values are 15.6 ms and 18.1 ms,respectively.CCDC:910120.%设计合成了含三氟甲基8-羟基喹啉衍生物配体(E)-2-[2-(2-三氟甲基苯基)乙烯基]-8-羟基喹啉(4)及其相应的锌配合物5,产物经1H NMR,IR,MS和元素分析进行了结构表征.利用X射线单晶衍射仪测定了配体L(4)的单晶结构,发现其具有独特的螺旋形结构.通过核磁滴定以及紫外和荧光滴定模拟了配体L(4)在溶液中与金属锌的配位过程,荧光光谱显示在甲醇溶液中配体的λmax=474 nm(蓝色),配合物的λmax=601 nm(橙黄色).同时测定了配体和配合物的固体荧光寿命,两者的荧光寿命分别为15.6 ms和18.1 ms.